Energie Lösungen

[carlitoco]

Habe da etwas gefunden, was ich interessant finde.
***********
Regulating Voltage to a Servo
As you should already know, Servos have a voltage rating. Go above that voltage and your servo overheats and possibly fries. So suppose you have a 7.2V battery and you want to use a 5V regulator to power your servos, is that a good idea?

Short answer: No!

Longer answer . . . it will work, but its a huge waste of battery power.

So lets say you have your 7.2V regulated to 5V and the Servos draw a total of 1.5A of current.

Wasted power is:
(7.2V-5V)*1.5A = 3.3W

Percentage wise, its
(7.2V-5V)/7.2V = 30.6%

Thats the battery energy percentage wasted to thermal heat - almost 1/3rd!!!

Speaking of heat, your voltage regulator probably has thermal shutdown, meaning that if it overheats it will throttle down current to your Servos - meaning your Servos will have lower torque and lower speed. If your voltage regulator doesn't have thermal shutdown, it will just fry instead (not a good thing).

But if you still really really need to regulate for servos, get a switching regulator (like ~83% efficiency on average).
**********
Habe jedoch Bedenken die Methode aus zu probieren.

[carlitoco]

hat jemand für den RP6 schon ne Ladestation gebaut ?

[Dirk]

In dem Beitrag wird doch nur der Vorteil von Schaltreglern gegenüber Längsreglern (wie dem 780x) betont! Das ist nichts Neues und lange bekannt.

Gruß Dirk

[ikarus_177]

Hi,

man kann aber auch die "schnelle" Variante verwenden, um die Spannung zu reduzieren: einfach zwei Dioden in Serie schalten (die den Strom natürlich aushalten!), und schon ist die Spannung um 1V vermindert. Die Wärmeverluste sind dabei auch noch recht gering.

Viele Grüße